Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4802109.

I wanted to add some color to my screen housing so I made this in Tinkercad. You can simply drop it in place or do what I did and use a couple thin strings of blue sticky tack along the bottom of the flat outer frame. I purposely designed it to have a slight bit of wiggle room (<0.2mm) so you should not have to make any post-print adjustments.